Python 2.7安装Caver报错:Python 3 is required for Caver

在使用pip安装Caver软件包时,如果出现类似以下错误信息,说明你当前使用的是Python 2.7环境:

(py2) sun@wp:/media/sun/yingpan/linux/pymol_py2.7$ pip install caver -i https://pypi.tuna.tsinghua.edu.cn/simple some-package
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting caver
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/e4/2e/f5a5cd4a8165586b08f12d29789142013a57401c36fe961f678fd6cd424f/caver-0.2.tar.gz
    ERROR: Command errored out with exit status 1:
     command: /home/sun/miniconda3/envs/py2/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '/tmp/pip-install-Sjsitv/caver/setup.py'; __file__='/tmp/pip-install-Sjsitv/caver/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('
', '
');f.close();exec(compile(code, __file__, 'exec'))' egg_info --egg-base /tmp/pip-install-Sjsitv/caver/pip-egg-info
         cwd: /tmp/pip-install-Sjsitv/caver/
    Complete output (1 lines):
    Sorry, Python 3 is required for Caver
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

原因分析:

根据错误信息'Sorry, Python 3 is required for Caver'可知,Caver软件包要求使用Python 3环境运行,而你当前使用的是Python 2.7版本,因此无法安装成功。

解决方案:

要解决此问题,你需要升级到Python 3环境并使用Python 3环境下的pip安装Caver。

你可以按照以下步骤进行操作:

  1. 安装Python 3: 从Python官方网站下载并安装最新版本的Python 3。
  2. 创建新的Python 3环境: 使用虚拟环境工具(如virtualenv、conda)创建一个新的Python 3环境,以便将不同项目所需的Python版本和依赖包进行隔离。
  3. 激活新的Python 3环境: 激活新创建的Python 3环境。
  4. 安装Caver: 在激活的Python 3环境下,使用以下命令安装Caver:
pip install caver -i https://pypi.tuna.tsinghua.edu.cn/simple some-package

注意: Python 2.7已经停止维护,建议尽快迁移到Python 3以获得更好的支持和功能。

解决Python 2.7安装Caver报错:Python 3 is required for Caver

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